Gen 17:1 …Jehovah appeared to Abram and said to him, I am the All-sufficient God; Walk before Me, and be perfect.
“We need to learn the meaning of the title of God in 17:1, the all-sufficient God. In Hebrew this title is El-Shaddai. El means the Strong One, the Mighty One, and Shaddai, implying the meaning of breast, udder, means all-sufficient. El-Shaddai is the Mighty One with an udder, the Mighty One who has the all-sufficient supply. An udder produces milk, and the milk is the all-sufficient supply, having water, minerals, and many vitamins in it and containing all that we need for our daily living. So El-Shaddai means the all-sufficient Mighty One.
Practically speaking, to be perfect means that we do not rely upon the strength of the flesh [i.e., self] but trust in the all-sufficient Mighty One for our life and work. We must always trust in God’s all-sufficiency for everything.”